Electrical grounding arrangement for a printed circuit board of a microwave oven

Abstract

The present invention relates to a ground structure of a printed circuit board in a microwave oven, where the microwave oven formed with a screw hole at a tip end of a bar extended from a body thereof and having a jumper wire connected to a ground pattern at around a screw hole formed at a printed circuit board while a bolt is screwed to a control panel through a screw hole formed at the tip end of the bar and through a screw hole formed at the printed circuit board are connected by the jumper wire, so that the printed circuit board is automatically connected and grounded to the body of the microwave oven when the printed circuit board is fastened to the control panel, thereby providing a convenience in assembly of the microwave oven and a stability thereto.

What is claimed is: 
     
       1. A microwave oven comprising a body, a non-metallic control panel mounted on the body, and a printed circuit board attached to the control panel; the printed circuit board including a first hole and a ground pattern extending around the first hole, a jumper wire on an upper surface of the printed circuit board and disposed in electrically conducting engagement with the ground pattern, the body including a metallic bar extending across a portion of the printed circuit board containing the jumper wire and including a second hole; a fastening screw extending through the first and second holes within an area bordered by the jumper wire and connected to the control panel for attaching the circuit board to the control panel, and simultaneously pressing the bar into direct engagement with the jumper wire to electrically ground the ground pattern to the body.